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Calling with User Presence Tutorial

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We have a new tutorial for Android developers looking to make voice calls with user presence.

App to App Calling

In this new tutorial from Jordan, you will build a calling app that displays a real-time list of online users and only allow calls to and from those online users. You will use Sinch app-to-app calling to make the calls, and Pubnub presence detection to create a real-time list of online users.

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